JP2005218010A - Intravehicle data transmission system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mainly provide an intravehicle data transmission system that relates to an intravehicle data communication system, enables a passenger or crew in the vehicle to individually use a handsfree system, enables only a passenger or crew receiving an incoming call to immediately detect the incoming call to perform communication and does not disturb other passenger or crew music appreciation. <P>SOLUTION: An intravehicle data input-output device 10 that can communicate with all intravehicle voice input-output devices through an intravehicle communication line 11 gives a data channel to each voice input-output device and inputs and outputs to/from a proper channel a data input-output to/from the data channel on the basis of a passenger or crew location specifying means provided in the intravehicle data input-output device 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicular data communication system, and more particularly to a vehicular data transmission system suitable for use as a connection network between a vehicular hands-free system and an in-vehicle audio system.

  A conventional hands-free system for a vehicle via a vehicle data transmission system uses a wireless or wired means and a specific voice input / output device in a vehicle to receive a voice signal received by a mobile phone possessed by a specific occupant or a radio device instead. The audio signal is input / output.

  Such a hands-free system communicates with a public network outside a vehicle through a single mobile phone of a specific occupant. Conventionally, a plurality of occupants in a vehicle can use a single mobile phone at the same time. A system that can participate in is proposed.

  FIG. 7 shows a conventional hands-free system for a vehicle.

  In FIG. 7, reference numeral 1 denotes a mobile phone possessed by a specific occupant, which inputs a control signal to the control means 2 when a call is made or received. Passenger detection means 3 detects the presence or absence of a passenger with a seat belt or a seat sensor in the vehicle, and inputs a control signal to control means 2.

  In response to the control signal, the control means 2 synthesizes the voice from the driver microphone unit 5 and the voice from the passenger microphone unit 7 input to the transmission signal transmission means 4, and I'm talking.

  Further, by outputting sound from the mobile phone 1 from the speaker 6, a plurality of passengers can simultaneously participate in a call on one mobile phone.

For example, Patent Document 1 is known as a prior art document relating to the invention of this application.
JP 2000-362457 A

  However, in the conventional hands-free system including the vehicle data transmission system including Patent Document 1, only a single mobile phone possessed by any occupant in the vehicle can be used. Because it cannot be used simultaneously with a mobile phone owned by a passenger, passengers who do not use the hands-free system can detect calls and incoming calls using the mobile phone owned by the passenger, especially when listening to music in the vehicle. In addition, even if the music volume output in the vehicle is lowered during a call, there is a possibility that other passengers will not be able to listen to the music.

  In view of the above-mentioned problems, the present invention enables individual passengers in the vehicle to use the hands-free system, and even under such circumstances, only the passenger who has received an incoming call can immediately detect the incoming call and make a call. It is an object of the present invention to provide a vehicle data transmission system that does not hinder other passengers from listening to music.

  In order to achieve the above object, the present invention has the following configuration.

  The invention according to claim 1 of the present invention, in particular, includes a plurality of voice input devices for inputting a voice of an occupant in a vehicle, and at least one for converting a voice input from the voice input device into a digital signal. The A / D converter, a plurality of sound output devices, and a vehicle data input / output device are provided, and the A / D converter, the plurality of sound output devices, and the vehicle data input / output are provided. Is a vehicle data transmission system connected as an annular in-vehicle communication line, the vehicle data input / output device comprising at least one CPU device and at least one audio signal reproducing means. Boarding position specifying means for specifying the position of an occupant in the vehicle, personal information input means for inputting personal information including a telephone number owned by the occupant or an identification number on behalf of the occupant, and in the annular vehicle Storage means for storing an identifier for identifying a signal of a digital signal input / output device that uses a plurality of data channels for digital signal input / output including voice data flowing through a communication line, occupant position information, and the personal information in a predetermined manner And at least one wireless transmission / reception means for communicating with the public line by the telephone number and the personal identification number, the transmission signal processing means and the reception signal processing means, and comprising the plurality of data channels A communication data frame is generated, the generated communication data frame is output to the annular in-vehicle communication line, the data channel used for the digital signal input / output device is managed and generated, and the received signal processing is performed. Each data signal output from the A / D converter and the audio signal reproducing means and the A / D converter A vehicle which inputs to a specific data channel according to information in the stage and outputs a signal obtained from the specific data channel based on information in the storage means from the data channel synthesis / data extraction means to the transmission signal processing means Data transmission system.

  Accordingly, there is an effect that all voice data signals including signals inputted to and outputted from the public network that are inputted to and outputted from the vehicle data input / output device can be inputted / outputted through the designated voice input device and voice output device. can get.

  The invention according to claim 2 of the present invention is characterized in that at least one pair of the voice input device and the voice output device is provided in the vicinity of each seat in the vehicle. This system provides an effect that each passenger in the vehicle can make a call through the voice input / output device.

  According to the third aspect of the present invention, in particular, the personal information input means reads out desired data from a storage medium storing predetermined personal information by wired or wireless means and transfers the data to the storage means. The vehicle data transmission system according to claim 1, characterized in that each passenger can collect necessary information from a personal information storage medium brought into the vehicle.

  The invention according to claim 4 of the present invention is the vehicle data transmission system according to claim 1, characterized in that, in particular, the system stored in the storage means stores data channels as keys. Thus, for each data channel, there is an effect that the identifier of the device to which the channel is assigned, the sound source source information of the channel, the occupant position information, and the personal information can be uniquely specified.

  In the invention according to claim 5 of the present invention, in particular, when the radio reception means receives an incoming signal for a telephone number transmitted from a public line, the vehicle data input / output device refers to the storage means, 2. The vehicle data transmission system according to claim 1, wherein processing for changing the sound source information of the data channel including the telephone number to reception signal processing means is performed. An effect of enabling an incoming call notification and a call to the voice input / output device in the vicinity of a passenger having

  According to the sixth aspect of the present invention, in particular, when the boarding position specifying means includes a voiceprint analyzer, and the personal voiceprint information is included in the storage medium storing the personal information, the A / D The data signals of all the data channels assigned to the converter and all the personal voiceprint information are compared by the voiceprint analyzer and stored in the storage medium when they are considered to match according to a predetermined criterion. The vehicle data transmission system according to claim 1, wherein the personal information is stored in the personal information in the data channel stored in the storage means, whereby each occupant seated in the seat The personal boarding position information and the personal information are automatically associated with each other and stored in the storage means.

  In the vehicle data transmission system of the present invention, all the voice input / output devices in the vehicle are connected via the in-vehicle communication line, and personal information including the telephone number of the passenger in the vehicle is stored in the vehicle data input / output device. Since the means for inputting and the means for specifying the occupant's boarding position are provided, a voice input / output device near the seat where each occupant is located can be assigned.

  Each occupant is further provided with a wireless transmission / reception means for connecting to the public network, and outputting the received signal to an appropriate data channel of a communication data frame flowing through the in-vehicle communication line, through a voice input device assigned to each occupant. Specific incoming notifications and calls can be provided.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration example of a vehicle data transmission system according to Embodiment 1 of the present invention.

  In FIG. 1, reference numeral 10 denotes a vehicle data input / output device. Data output from this device circulates in the vehicle through an annular in-vehicle communication circuit 11 and is input to this device. . In the vehicle of the present embodiment, seats A, B, C, and D are present, and a speaker 121L and a microphone 131L are provided as a voice input / output device in the vicinity of the seat A. The speaker 121L and the microphone 131L are A / It is connected to the in-vehicle communication line 11 via the D converter 111L. Similarly, for the seats B to D, speakers 122R, 123L, and 124R, microphones 132R, 133L, and 134R, and A / D converters 112R, 113L, and 114R are connected to the in-vehicle communication line 11.

  FIG. 2 is a configuration diagram of the vehicle data input / output device 10.

  Referring to FIG. 2, personal information input means 33 is capable of reading personal record information stored in a storage medium such as an IC card. In this embodiment, personal information input means 33 is a personal mobile phone or IP phone number. And personal voiceprint information are stored in the IC card. The boarding position specifying means 34 specifies whether the occupant corresponding to the personal information is sitting in any of the seats A to D in FIG. 1, and in this embodiment, has a voice print analyzer.

  The wireless transmission / reception means 38 performs wireless connection and communication with the public line 20. In this embodiment, the wireless transmission / reception means 38 communicates with the public line 20 using the personal telephone number input to the personal information input means 33. In other words, it is configured using a multi-antenna or an array antenna so that a plurality of people can use it simultaneously. As described above, the radio signal transmitted / received to / from the public line 20 is packetized by the signal processing unit 37 for outputting a radio signal and decoding for synthesizing received packet data.

  The operation of the vehicle data input / output device is performed by the CPU 31 in accordance with the condition in which the data output from the audio signal reproducing means 35 such as a CD and the received signal processing means 37R in the signal processing means 37 is stored in the storage means 32. The communication data frame generated by performing the data frame generation control on the data channel combining / data extracting means 36 is transmitted to the in-vehicle communication line 11 through the data input / output means 39, while the communication data received from the same line. In order to send the data of a specific data channel portion included in the frame to the public line, the transmission signal processing means 37S performs communication data frame division control for extracting the data channel.

  In the above description, a storage medium reading device such as an IC card is used as the personal information input means 33. However, if the wireless transmission / reception means 38 is provided and a radio tag storing personal information is attached to the occupant, the personal information input means 33 is contactless. Data can be entered. In addition, when the voiceprint information cannot be obtained, an input display device can be provided so that the boarding position specifying means 34 can directly specify the boarding position.

  With the above configuration, a specific operation example will be described.

  1 and 2, in the state where each occupant gets in the seats A to D, the music CD is output from the audio signal reproducing means 35 as audio from all the speakers 121L, 122R, 123L, 124R in the vehicle. Suppose that FIG. 3 shows an example of data stored in the storage means 32 of FIG. 2 at this time.

  FIG. 3A shows a data channel table T1, and a device identifier that uses a data channel as a key for a device that requires securing or using a data channel in a speaker or an A / D converter in a vehicle, It is composed of a use band, a sound source thereof, a use situation, and installation position information of the apparatus in the vehicle.

  FIG. 3B shows a personal position information table T2, which is composed of personal information such as a voice print and a telephone number with a seat in the vehicle as a key.

  In the present invention, as shown in FIG. 3A, a CD device is used as a sound source from a speaker in the vehicle, and a CD audio signal R channel is output from the vehicle left speakers 121L and 123L from the vehicle right speakers 122R and 124R. The A / D converters 111L, 112R, 113L, and 114R connected to the microphones 131L, 132R, 133L, and 134R are in an off state. On the other hand, only the boarding position information (seat information) serving as a key value is stored in the personal position information table T2.

  FIG. 4 shows a communication data frame configuration that flows through the in-vehicle communication line 11 in the above example.

  Referring to FIG. 4, the audio signals (L and R channels) from the CD device secure bands a and b, respectively, and data channels (1ch and 3ch) for the A / D converter are used as audio input bands from the passengers. , 5ch, 7ch) are in a state in which the bandwidth is secured in advance, and each speaker and A / D converter are in a state of inputting / outputting data signals from the assigned channels. .

  Next, processing for initial setting of the personal position information table T2 will be described with reference to FIG.

  FIG. 5 shows a processing flow to be controlled by the CPU 31 in specifying the personal boarding position information of a certain seat.

  Referring to FIG. 5, first, a microphone (A / D converter) in the vicinity of a specified seat is turned on, and a voice data signal from an occupant located in the seat is extracted from a communication data frame (step S51). For example, when processing in the seat A is performed, the 1ch signal input from the A / D converter 111L corresponds.

  Next, the signal is input to a voiceprint analyzer provided in the boarding position specifying means 34 (step S52).

  In the voiceprint analyzer, the personal information input means 33 performs a process of sequentially comparing the input personal voiceprint information of the occupant and the extracted data signal (step S53).

  If a matching voiceprint exists, it is assumed that the occupant having the voiceprint information is located in the seat, and the personal information and the telephone number of the occupant are registered in the seat of the personal location information table T2 in FIG. Steps S54 to S55).

  The above processing is performed for all seats, and the telephone numbers of the passengers located in all the seats can be registered in the personal position information table T2.

  Next, an explanation will be given of the operation when the wireless receiving means receives an incoming signal for a telephone number transmitted from a public line with reference to FIG.

  FIG. 6 shows that a passenger in a vehicle inputs personal information including a telephone number by means of the personal information input means 33, and the boarding position specifying means 34 stores the telephone number of the registered occupant in the personal position information table T2. The processing flow is controlled by the CPU 31 when there is an incoming call from the public network.

  Referring to FIG. 6, the CPU 31 detects an incoming call from the public line 20 through the wireless transmission / reception means 38 and the reception signal processing means 37R (step S61).

  The CPU 31 that has detected the incoming call specifies the seat position of the occupant from the personal position information table T2 using the telephone number that received the incoming call as a key (step S62), and the speaker from the data channel table T1 using the seat position as a key. And the data channel is specified (step S63).

  Next, the usage status of the identified data channel and the power source are referred to from the data channel table, and if the sound source is an external call (reception signal processing means 37R) and the usage status is on, the external call has already been made. Since it is assumed that the state is present, the incoming call is not possible or only the incoming call is notified by some display means, and the process is terminated (steps S64 and S66).

  In other cases, the data channel synthesizing / data extracting means 36 is instructed to provide a speaker band, and a control signal is transmitted to the speaker so as to change the use band so as to output a data signal from the band. . The control signal is transmitted by the control signal channel of the communication data frame.

  If it is confirmed that the speaker has changed the use band, the sound source record of the data channel in the data channel table T1 is changed to the reception signal processing means 37R (step S65).

  As a result, the data channel combining / data extracting means 36 is input to the received signal processing means 37R. The CPU 31 is controlled to output the incoming signal of the passenger to the newly provided speaker band (step S67).

  When the above processing is completed, the music signal output from the speaker is turned off, and an incoming call signal is output instead.

  Next, in step S68, the speaker and the A / D converter of the seat where the occupant is located for the call are turned on, and the use band and use status record in the A / D converter of the data channel table T1 are turned on. By doing so, the data channel synthesizing / data extracting means 36 outputs the signal of the data band to the transmission signal processing means 37S.

  With the above processing, a hands-free call can be performed using a speaker and an A / D converter near the passenger who has received an incoming call from the public line 20 without affecting the data channel of another passenger.

  In the present embodiment, a use case for a single occupant has been described. However, even if an occupant in a vehicle uses the system at the same time, a hands-free call can be performed in the same procedure.

  The vehicle data transmission system according to the present invention has an effect that a plurality of occupants in the vehicle can use the hands-free system at the same time, and controls the input / output signals of the voice input / output device for each occupant. It is useful as a connection network between the hands-free system and the audio system in the vehicle.

The figure which shows the data transmission system for vehicles in Embodiment 1 of this invention. Block configuration diagram of the vehicle data input / output device in the same embodiment The figure which shows the example of data stored in the memory | storage means in the embodiment Communication data frame configuration diagram of in-vehicle communication line in the embodiment Personal ride position information specifying process flow diagram in the embodiment Processing flow chart when receiving an incoming call from the public network in the same embodiment The figure which shows the conventional hands-free system for vehicles

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle data input / output device 11 In-vehicle communication line 111L, 112R, 113L, 114R A / D converter 121L, 122R, 123L, 124R Speaker 131L, 132R, 133L, 134R Microphone 20 Public line 31 CPU device 32 Storage means 33 Personal information input means 34 Riding position specifying means 35 Audio signal reproduction means 36 Data channel synthesis / data extraction means 37 Signal processing means 37S Transmission signal processing means 37R Reception signal processing means 38 Wireless transmission / reception means 39 Data input / output means

Claims (6)

A plurality of voice input devices for inputting voices of passengers in the vehicle, at least one A / D converter for converting voices input from the voice input devices into digital signals, and a plurality of voice outputs A data input / output device for a vehicle, and the A / D converter, the plurality of audio output devices, and the data input / output device for a vehicle are connected as an annular in-vehicle communication line A vehicular data transmission system, wherein the vehicular data input / output device includes at least one CPU device, at least one audio signal reproducing means, and a ride position specification for specifying a position of an occupant in the vehicle. Means, personal information input means for inputting personal information including a telephone number owned by the occupant or an identification number on behalf thereof, and a digital data including voice data flowing through the annular in-vehicle communication line A storage means for storing an identifier for identifying a signal of a digital signal input / output device using a plurality of signal channels for signal input / output, occupant position information, and the personal information in a predetermined manner, and the telephone number and personal identification number Generating at least one wireless transmission / reception means for communicating with a public line by means of, a transmission signal processing means and a reception signal processing means, and generating a communication data frame composed of the plurality of data channels Outputting the communication data frame to the annular in-vehicle communication line, managing and generating the data channel to be used for the digital signal input / output device, the received signal processing means and the audio signal reproducing means, and Each data signal output from the A / D converter is converted into a specific data channel by information in the storage means. Type Le, the vehicle data transmission system and outputs a signal obtained from the particular data channel by the information in the storage means from the data channel synthesis data extracting means to the transmitting signal processing means. The vehicle data transmission system according to claim 1, wherein at least one pair of the voice input device and the voice output device is provided near each seat in the vehicle. 2. The vehicle data transmission system according to claim 1, wherein the personal information input means reads desired data from a storage medium storing predetermined personal information by wired or wireless means and transfers the data to the storage means. . The vehicle data transmission system according to claim 1, wherein the system stored in the storage means stores the data channel as a key. When the radio reception means receives an incoming signal for a telephone number transmitted from a public line, the vehicle data input / output device refers to the storage means and receives the sound source information of the data channel including the telephone number as a reception signal. The vehicular data transmission system according to claim 1, wherein a processing for changing to processing means is performed. The boarding position specifying means includes a voiceprint analyzer, and when personal voiceprint information is included in a storage medium storing personal information, data signals of all data channels assigned to the A / D converter The personal information stored in the storage medium is stored in the storage means when the personal voice print information is compared with the voice print analyzer and is considered to be matched by a predetermined criterion. The vehicle data transmission system according to claim 1, wherein personal information in the data channel is stored.

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